The sum of three consecutive integers is 84.

Question

Equation word problem

 

 

Answer 1

using algebra...

x+(x+1)+(x+2)=84

3x+3=84

3x=81

x=27

x+1=28

x+2=29

27, 28, 29 are the integers

 

using arithmetic...

84/3=28, the mean of the numbers and also the middle number of the three numbers

28-1=27

28+1=29

27, 28, 29 again

 

Answer 2

n+(n+1)+(n+2)=84

3n+3=84

3n=81

 

n=27

 

then. the three integers are:

27, 28, 29